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Finding the Fourth Proportional to 238,086.68, 328,569.11 and 130,660.56

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Solution

The fourth proportional to 238,086.68, 328,569.11 and 130,660.56 is: 180,316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,086.68 : 328,569.11 = 130,660.56 : x
  2. Step 2: Convert to fraction form
    238,086.68/328,569.11 = 130,660.56/x
  3. Step 3: Cross multiply
    238,086.68x = 328,569.11 × 130,660.56
  4. Step 4: Simplify right side
    238,086.68x = 42,931,023,258.00
  5. Step 5: Solve for x
    x = 42,931,023,258.00/238,086.68
  6. Step 6: Final answer
    x = 180,316.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.